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3 years ago

HELP QUICK Remove grouping symbols and combine like terms. 4a2 - 3[2b - 3b(b - 1)]

Mathematics

2 answers:

kvasek [131]3 years ago

8 0

Answer:
4a^2 - 15b + 9b^2

Step by step explanation:

makkiz [27]3 years ago

3 0

Answer:

$4a^{2} + 9b^{2} + 3b$

Step-by-step explanation:

Distributive Property

$4a^2 - 3(2b - 3b^{2} + 3b)$

Distributive Property

${4a}^{2} - 6b + 9b^{2} + 9b$

Combine Like Terms

$4a^{2} + 9b^{2} + 3b$

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PLEASES HELP <br> I need help on this question the screenshot are down below

m_a_m_a [10]

Answer:

D would be the answer

Step-by-step explanation:

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3 years ago

Can someone please help me with this

adell [148]

Area of a parallelogram is base x height
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2 years ago

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Jennifer and Kamlee are walking to school. After 20 minutes, Jennifer has walked 4/5 miles. After 25 minutes, Kamlee has walked

Nimfa-mama [501]

Answer:

Jennifer's speed is 2.4 miles/hour

Kamlee's speed is 2 miles/hour

Step-by-step explanation:

To find their speed,

Speed can be determined from the formula below,

$Speed = \frac{Distance}{Time}$

Also, to determine the speed in miles per hour (miles/hour), we will convert the time spent by each of them to hour (NOTE: 60 minutes = 1 hour)

For Jennifer,

Distance = 4/5 miles

Time = 20 mins (Convert to hour)

∴Time = (20/60) hour = 1/3 hour

Hence,

$Speed = \frac{Distance}{Time}$

$Speed = \frac{4/5 miles}{1/3hour}$

$Speed = \frac{4}{5} \times \frac{3}{1}$

$Speed = \frac{12}{5}$

$Speed = 2.4 miles/hour$

Hence, Jennifer's speed is 2.4 miles/hour

For Kamlee,

Distance = 5/6 miles

Time = 25 minutes (Convert to hour)

Time = (25/60) hour = 5/12 hour

Hence,

$Speed = \frac{Distance}{Time}$

$Speed = \frac{5/6miles}{5/12 hour}$

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2 years ago

You are to give an injection of a drug. The dosage is 0.4 mg per kilogram of bod The concentration of the drug in vial is listed

kipiarov [429]

Answer:

You inject 60.9628 milliliters of dosage

Step-by-step explanation:

1 pound = 0.453592kg,

Patient's weight in pounds = 168

Patient's weight in kg = $76.2035 kg$

Now we are given that The dosage is 0.4 mg per kilogram of bod

So, dosage = $0.4 \times 76.2035 mg = 30.4814 mg$

1 microgram = 0.001 mg

Concentration of drug = $500 micrograms/ml = 500 * 0.001 mg/ml = 0.5 mg/ml$

Now we are supposed to find How many milliliters (= cc) are you to inject?

So,milliliters of dosage required to inject = $\frac{30.4814}{0.5} = 60.9628$

Hence you inject 60.9628 milliliters of dosage

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3 years ago

Find the value of x in the figure.

topjm [15]

Final answer: x=9

your welcome

7 0

3 years ago

Read 2 more answers